Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nissa Harrington, RD/LD

Registered Dietitian in Ada, OK · enumerated 2016.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1891247466

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Registry record

Entity type Individual (Type 1)

Name Nissa Harrington

Credential RD/LD

Sex Female

Practice address 1921 Stonecipher Blvd, Ada, OK, 74820

Phone (580) 421-4570

Enumeration date Oct 31, 2016

Last updated in NPPES Oct 31, 2016

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 1633 (OK) Primary

RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Nissa Harrington's NPI record?

Cross-check NPI 1891247466 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1891247466 active?

Yes, as of the latest NPPES snapshot, NPI 1891247466 is active (record last updated 2016-10-31).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-10-31.